For a charcoal grill, arrange medium-hot coals around a drip pan. Test for medium heat above pan. Place meat on grill rack over drip pan. Cover and grill about 4 hours or until meat is very tender. (For a gas grill, preheat grill. Reduce heat to medium. Adjust for indirect cooking. Place meat on a rack in a roasting pan, place on grill rack, and grill as above.) Remove meat from grill; cover with foil and let stand for 30 minutes.